Magnet core based on lithium-zinc-magnanese ferrite.

摘要

In order to obtain a soft magnetic ferrite having a high density and a low value of the loss factor, Bi2O3 and/or V2O5 is or are added to an LiZmMn ferrite of the composition (Li0.5 Fe0.5) 1-z-a-y Znz Coa Mny <II>Mnx <III>Fe2-x+ delta O4 3_2 delta + epsilon with 0.05 </= z </= 0.62 0 </= a </= 0.05 0.01 </= x+y </= 0.25 -0.2 </= delta </= +0.5 -0.5 epsilon </= </=+0.25a The quantities of B2O3 and V2O5 are maximally 0.15 and 0.20% by weight, respectively, but collectively they are never more than 0.20% by weight nor less than 0.005% by weight.